1125533136 has 240 divisors, whose sum is σ = 3683389248. Its totient is φ = 293529600.

The previous prime is 1125533131. The next prime is 1125533141. The reversal of 1125533136 is 6313355211.

It is an interprime number because it is at equal distance from previous prime (1125533131) and next prime (1125533141).

Its product of digits (8100) is a multiple of the sum of its prime factors (450).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125533131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4005316 + ... + 4005596.

Almost surely, 2^1125533136 is an apocalyptic number.

1125533136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125533136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841694624).

1125533136 is an abundant number, since it is smaller than the sum of its proper divisors (2557856112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125533136 is a wasteful number, since it uses less digits than its factorization.

1125533136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 437 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 1125533136 is about 33548.9662433882. The cubic root of 1125533136 is about 1040.2061770720.

Adding to 1125533136 its reverse (6313355211), we get a palindrome (7438888347).

The spelling of 1125533136 in words is "one billion, one hundred twenty-five million, five hundred thirty-three thousand, one hundred thirty-six".